Rotatable tool for chip removing machining as well as a loose top and a basic body therefor
AssigneeSandvik Intellectual Property AB
InventorÅke Danielsson
Life of this patent
Estimating the term…
Abstract
A rotatable tool for chip removing machining including a basic body and a loose top; the body includes two torque-transferring drivers and an intermediate bottom in which a rear coupling part of the loose top is receivable, and a center hole that mouths in the intermediate bottom. A centric pin is insertable into the center hole, and a screw is accessible from the outside of the basic body. The coupling part includes a pair of side contact surfaces which cooperate with a pair of side support surfaces on the drivers of the basic body for the transfer of torque and negative axial forces between the coupling part and the drivers.
Claims31
A rotatable tool for chip removing machining, comprising:
- a basic body having front and rear ends between which a first center axis (C1) extends, with which an envelope surface is concentric and around which the basic body is rotatable;
- and
- a loose top that includes front and rear ends between which a second center axis (C2) extends with which an envelope surface is concentric,
- the front end of the basic body including a jaw which is delimited by two torque-transferring drivers and an intermediate bottom in which a rear coupling part of the loose top is receivable, and a center hole that mouths in the intermediate bottom and has a hole wall which extends axially inside the basic body and in which a threaded hole being concentric with a third center axis (C3) mouths for a screw to co-operate with a centric pin which protrudes axially rearward from the coupling part, the centric pin being insertable into the center hole, and the threaded hole being accessible from the outside of the basic body,
- the coupling part of the loose top including a pair of axial contact surfaces which cooperate with a pair of axial support surfaces on the drivers of the basic body for the transfer of positive axial forces between the coupling part and the drivers,
- the coupling part of the loose top including a pair of side contact surfaces which cooperate with a pair of side support surfaces on the drivers of the basic body for the transfer of torque and negative axial forces between the coupling part and the drivers,
- wherein the pair of side contact surfaces define two laterally projecting male members arranged to engage two corresponding seats defined by the pair of side support surfaces of the drivers in an axially locking position, and the pin of the loose top includes a surface for turning the pin and the loose top by cooperation with the screw.
A loose top for rotatable tools for chip removing machining, comprising:
- front and rear ends between which a center axis (C2) extends, with which a pair of envelope part surfaces are concentric;
- and
- a centric pin protruding from a rear coupling part,
- wherein the coupling part separates two axial contact surfaces and includes two laterally protruding male members which are axially separated from the axial contact surfaces and prevent retraction of the coupling part out of a jaw in a tool basic body, and
- wherein the pin includes a surface for turning the pin and the loose top when the surface cooperates with a screw.
A basic body for rotatable tools for chip removing machining, comprising:
- front and rear ends between which a center axis (C1) extends around which the basic body is rotatable, and with which an envelope surface is concentric,
- the front end including a jaw which is delimited by two torque-transferring drivers, and an intermediate bottom in which there mouths a center hole, the center hole having a hole wall which extends axially inside the basic body and in which there mouths a radial hole that includes a female thread for a screw and that extends between the center hole and the envelope surface,
- wherein free, front ends of the drivers form axial support surfaces for a co-operating loose top, and in the insides of the drivers, seats are recessed, which open inward toward the center of the jaw.
Dependencies are inferred from the claim text.